json parser exception

Question

i want to send json data to my page , here is the code :

response.setContentType("application/json");
    String jsonObject = "{ key1 = value1, key2 = value2 }";
    JSON json = JSONSerializer.toJSON(jsonObject);
    PrintWriter out = response.getWriter();
    out.print(json);
    out.flush();
    return null;

i get this error :

java.lang.NoClassDefFoundError: net/sf/json/JSONSerializer

i'm using jdk1.7 and json : -json-lib-2.4-jdk15.jar -json-lib-2.4-jdk15-javadoc.jar -json-lib-2.4-jdk15-sources.jar

ezmorph : -ezmorph-1.0.6.jar

and commons-lang.jar

why i'm getting this error ?

You should check whether the json-lib jar file is actually present in the classpath when you run the servlet, e.g. in WEB-INF/lib/. — Henrik Aasted Sørensen
– Henrik Aasted Sørensen, Commented Oct 30, 2012 at 11:53

VicoMan · Accepted Answer · 2012-10-30 12:22:28Z

2

Try:

String myjsonObject = "{ key1 = value1, key2 = value2 }";
JSONObject json = (JSONObject) JSONSerializer.toJSON( myjsonObject );

answered Oct 30, 2012 at 12:22

VicoMan

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3 Comments

VicoMan Over a year ago

May be you should check How to add all your classpaths in eclipse: check this link

fatiDev Over a year ago

i added the jars in both methos external and internal , same issue

fatiDev Over a year ago

the problem was due to that i should redeploy the project in the server

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